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Secant pile construction cold joint treatment structure and method

A technology of occlusal piles and cold joints, which is used in foundation structure engineering, excavation, sheet pile walls, etc., can solve the problems affecting the integrity of foundation pit, anti-leakage, anti-seepage and anti-leakage performance to be strengthened, delaying occlusal piles Construction and other problems, to achieve the effect of strong anti-leakage ability, high overall stability, and reducing potential safety hazards

Pending Publication Date: 2020-01-10
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its outstanding advantages, occlusal piles are widely used in foundation pit engineering. However, during the construction of occlusal piles, the construction will be interrupted due to unpredictable factors such as weather, mechanical failures, and construction errors, which will delay the construction of occlusal piles. Make the construction cold joint of the occlusal pile plain pile
The cold joints in the construction of occlusal piles will seriously affect the integrity and anti-leakage performance of the foundation pit. At present, the anti-seepage and anti-leakage performance of the pile back reinforcement method of occlusal piles needs to be strengthened

Method used

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  • Secant pile construction cold joint treatment structure and method
  • Secant pile construction cold joint treatment structure and method
  • Secant pile construction cold joint treatment structure and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The cold joint treatment structure of the occlusal pile construction described in this embodiment includes the occlusal pile 1, the occlusal pile 2, the rotary grouting pile 3, the steel mesh 4, the C18 ribbed steel bar 5, the concrete layer 6, and the Y-shaped connection Pieces 7, Reinforced piles 8, Soil between occlusal plain piles 10, Steel mesh nodes 11, Glue for planting bars 12, Y-shaped connectors and ribbed steel welds 13, U-shaped connectors 14; C18 belt The ribbed reinforcement 5 is welded to the bottom of the Y-shaped connector 7, and the welding point is the Y-shaped connector and the ribbed reinforcement welding point 13; the occlusal pile 2 is used to plant reinforcement glue 12 to plant reinforcement C18 with ribbed reinforcement 5 and steel mesh The longitudinal bars 15 of the steel mesh and the transverse bars 16 of the steel mesh are connected by welding or binding to form the steel mesh 4, and the connection point between the longitudinal bars 15 of t...

Embodiment 2

[0032]In this embodiment, the structure described in Example 1 is used in the construction process of a certain subway station. The main structure of the occlusal pile construction cold joint treatment structure includes 1000mm occlusal pile 硂 pile 1, 1000mm occlusal pile plain pile 2, and 1000 mm rotary spray pile 3 , 8mm@200×200mm steel mesh sheet 4, C18 ribbed steel bar 5, 200mm thick C20 shotcrete layer 6, Y-shaped connector 7, 1000mm reinforced stone pile 8, 1000mm unconstructed stone pile 9, occlusal plain pile Inter-soil 10, steel mesh node 11, planting glue 12, Y-shaped connector and C18 ribbed steel welding spot 13, U-shaped connector 14, steel mesh longitudinal reinforcement 15, steel mesh transverse reinforcement 16; Y The outer two ends of the type connector 7 are provided with crotch hooks, and the bottoms of the two crotch hooks are welded and connected. Made of light round steel bars; the U-shaped ends of the U-shaped connector 14 have lengths of 200mm and 100mm...

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Abstract

The invention belongs to the technical field of constructional engineering, and relates to a secant pile construction cold joint treatment structure and method. Concrete is subjected to mesh sprayingto the position between formed plain piles, Y connecting pieces are connected with reinforcing mesh joints, U connecting parts enable combination of reinforcing meshes and a sprayed face to be more tight, dual layers of reinforcing meshes are adopted for improving anti-permeability and stability at a secant pile construction cold joint, reinforcing piles are arranged on the outer side, jet grouting piles are added to be secant with the reinforcing piles, and according to the geology, a grouting floral tube is added among the jet grouting piles, the reinforcing piles and the secant piles for further improving the leakage-resisting capacity of a foundation pit. The secant pile cold joint has high leakage-resisting capacity, whole stability is high, the foundation pit bracing safety is improved, safety hidden danger is reduced, the structure is suitable for subway foundation pit engineering, and secant pile construction cold joint treatment of the building foundation pit engineering has the wide application prospects.

Description

Technical field: [0001] The invention belongs to the technical field of construction engineering, and relates to a structure and a method for treating cold seams in occlusal pile construction during foundation pit construction. Background technique: [0002] The occlusal piles are partially embedded in the circumference of adjacent concrete rows, and steel cages are placed in the piles that are constructed alternately in the subsequent order to form an overall continuous waterproof and soil-retaining enclosure structure with good anti-seepage effect. Due to its outstanding advantages, occlusal piles are widely used in foundation pit engineering, but during the construction of occlusal piles, due to unpredictable factors such as weather, mechanical failures, and construction errors, the construction will be interrupted and the construction of occlusal piles will be delayed. Make the occlusal pile plain pile produce the construction cold joint. The cold joints in the construc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D19/18E02D5/46E02D5/30
CPCE02D17/04E02D19/18E02D5/46E02D5/30
Inventor 王永洪张明义白晓宇马加骁王海刚刘学颖
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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